Electronic Diet - part 2

RE: Electronic Diet - part 2

jw0752 — Fri, 23 Mar 2018 22:30:21 GMT

Hi Mark,

Is there a time of day when there would be demand for using the car? If there is any correlation to light you could install a MOSFET switch that would turn on or off with the sun light and eliminate the idle draw for half of the day. Or power only the radio receiver and use the MOSFET to switch in the rest of the circuit when a signal is received.

John

RE: Electronic Diet - part 2

three-phase — Fri, 23 Mar 2018 22:10:02 GMT

Depending on the age of the vehicle, I would suspect that there are also some additions to this 65mA such as the radio, clock and engine computer that usually have permanent 12V feeds to them, although you would hope they will be considerably lower than your alarm unit.

I think commercial and workload pressures encourage too fast a route to step 3 of your list and I am pretty sure at my current company a good majority of the engineers don't even know that step 4 exists.

Kind regards

RE: Electronic Diet - part 2

DAB — Fri, 23 Mar 2018 18:32:09 GMT

It is like a treasure hunt.

Find the leak and get the reward.

DAB

RE: Electronic Diet - part 2

genebren — Fri, 23 Mar 2018 14:49:41 GMT

Mark,

Interesting the 0.065mA could be the culprit, but Current x Time is the issue and your calculations show that this current is very close to the amount that could drain the battery. Good work on your current snooping, I look forward to your further findings and solutions.

Gene